TAILIEUCHUNG - Gas-assisted gravity drainage process for improved oil recovery in Bao Den fractured basement reservoir

The matched reservoir model with reservoir and fluid properties have been used to implement sensitivity analysis, the result indicated that there is significantly oil incremental and water cut reduction by GAGDapplication. Many different scenarios have run to find the optimal reservoir performance through GAGD process. Among these runs, the optimal scenario, which has distinct target, requires high levels of gas injection rate to attain the maximum cumulative oil production. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 19, SOÁ K1- 2016 Gas-assisted gravity drainage process for improved oil recovery in Bao Den fractured basement reservoir Nguyen Van Tuan 1, 2 Tran Van Xuan 2 1 Cuu Long JOC Faculty of Geology and Petroleum Engineering, Ho Chi Minh city University of Technology, VNU-HCM 2 (Manuscript Received on August 10th, 2015; Manuscript Revised on October 20th, 2015) ABSTRACT Gas injection has been widely used for reservoir conditions to implement GAGD. Both Improved Oil Recovery (IOR)/ Enhanced Oil reservoir simulation and Lab test have been run Recovery (EOR) processes in oil reservoirs. and confirmed the feasibility and the benefit of Unlike the conventional gas injection (CGI) GAGD project in the selected Dry gas modes of CGI and Water Alternating Gas will be periodically injected through existing (WAG), the Gas-Assisted Gravity Drainage wellwith high water cut production that located (GAGD) process takes advantage of the natural in the isolated area. As the injected gas rises to segregation of reservoir fluids to provide gravity the top to form a gas zone pushing GOC (gas oil stable oil displacement. It has been proved that contact) downward, and may push WOC (water GAGD Process results in better sweep efficiency oil contact) to lower part of this producer (or and higher microscopic displacement to recover even away from bottom of the well bore) could the bypassed oil from un-swept regions in the lower down water cut when switch this well reservoir. Therefore, dry gas has been back to production mode. The matched reservoir considered for injection in fractured basement model with reservoir and fluid properties have reservoir, Bao Den (BD) oil field located in Cuu been used to implement sensitivity analysis, the Long basin through the GAGD process result indicated that there is significantly oil application. This field, with a 5-year production incremental and water cut reduction by history, has nine production wells and

• Hoá học
• Gas assisted gravity drainage process
• Gravity drainage process
• Improved oil recovery
• Bao Den fractured basement reservoir
• The optimal scenario
• genitourinary tuberculosis
• laryngeal tuberculosis
• important clinical
• anatomical localisation
• optimal duration
• antiretroviral treatmenrt